build: update to actions/checkout@v3

Signed-off-by: deadprogram <ron@hybridgroup.com>

Author: deadprogram

.github/workflows/linux.yml

@@ -14,7 +14,7 @@ jobs:
     container: tinygo/tinygo-dev
     steps:
       - name: Checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
       - name: TinyGo version check
         run: tinygo version
       - name: Run unit tests

.github/workflows/macos.yml

@@ -21,7 +21,7 @@ jobs:
         with:
           go-version: '1.18.3'
       - name: Checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
       - name: Run unit tests
         run: go test
       - name: "Run macOS smoke tests"